LTC695IN-3.3#PBF

Supervisors Overview

The LTC695IN-3.3#PBF is a supervisory circuit manufactured by Analog Devices Inc., designed for monitoring microprocessor power supplies. It operates within a supply voltage range of 2.0V to 5.5V and provides a fixed reset output threshold at 3.3V. The device features an open-drain or open-collector active-low reset signal, ensuring compatibility with various logic families. It includes a manual reset input for system control and incorporates a programmable watchdog timer with a timeout period ranging from 140ms to 60s. The component functions reliably across an industrial temperature range of -40°C to +85°C and consumes a typical quiescent current of 600µA.

Supervisors Feature Summary

• Provides precise voltage supervision with a fixed 3.3V threshold for microprocessor power rails
• Integrates a programmable watchdog timer to detect software malfunctions and trigger system recovery
• Features an open-drain reset output compatible with multiple logic standards

Supervisors Applications

• Microprocessor power supply monitoring in embedded systems
• Watchdog timer implementation for fault detection in industrial controllers
• System reset generation in computer peripheral circuits

Supervisors Procurement Notes

Verify the specific package variant, as the suffix 'IN' indicates a PDIP-16 through-hole package. Confirm that the fixed 3.3V threshold aligns with the target system's voltage requirements. Ensure the open-drain output configuration matches the downstream logic interface. Check for any recent product change notifications regarding manufacturing updates.

Supervisors Selection Notes

Select this component when a fixed 3.3V supervision threshold is required without external resistor networks. Consider the PDIP-16 package if through-hole mounting is necessary for mechanical stability. Evaluate the 600µA quiescent current against system power budgets. Verify that the programmable watchdog timeout range covers the maximum allowable software execution time for the application.

Supervisors Part Context

This part belongs to the LTC695 series of supervisory circuits, which are designed for reliable system management in digital electronics. The series offers various voltage thresholds and package options to suit different design constraints. The '#PBF' designation confirms lead-free compliance and halogen-free material composition, adhering to environmental standards.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: None.